The Preferred Vendors List (PVL) is a project design tool employed in the execution of Capital Projects for the control of quality, functionality, standardization, operability, and cost. The list includes only selected manufacturers for specific categories of materials, discrete products, systems and packages (products). It should be noted that agents, representatives and contractors are excluded from the PVL. Entry on the PVL is at the sole discretion of QP's Project Engineering and Procurement Services Directorate.

Prospective Vendors may download the instructions and the list of current PVL categories. If their product falls within a cited category, only then should relevant technical materials be submitted as per the instructions. This submittal will permit the introduction of the Vendor’s product to QP's Project Engineering and Procurement Services​​ Directorate for potential consideration. Submittal of technical data does not constitute nor will it initiate any pre-qualification activity for that product at this time. Should a product be selected for assessment, only then will the Vendor be contacted for a formal presentation, technical assessment, and possible manufacturing site audit.